Worksheet 971 · Skill 4
Two-bearing fix
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At 0700 you take two bearings with a hand-bearing compass: Mill stack bears 171°M and Westfield church spire bears 271°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Red nun "2" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 1115 you take two bearings with a hand-bearing compass: Heron Point Light bears 171°M and Westfield church spire bears 292°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "1" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "1": ________ °T Distance: ________ nm
At 1405 you take two bearings with a hand-bearing compass: Mill stack bears 168°M and Westfield church spire bears 279°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Red nun "2" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 0955 you take two bearings with a hand-bearing compass: Heron Point Light bears 277°M and Gannet Rock daybeacon bears 006°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Kittle water tank to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Kittle water tank: ________ °T Distance: ________ nm
At 0915 you take two bearings with a hand-bearing compass: Heron Point Light bears 211°M and Westfield church spire bears 270°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Red nun "2" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Red nun "2": ________ °T Distance: ________ nm
At 1555 you take two bearings with a hand-bearing compass: Kittle water tank bears 174°M and Mill stack bears 224°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Gannet Rock daybeacon to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Gannet Rock daybeacon: ________ °T Distance: ________ nm
At 1625 you take two bearings with a hand-bearing compass: Westfield church spire bears 295°M and Mill stack bears 202°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "3" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "3": ________ °T Distance: ________ nm
At 1700 you take two bearings with a hand-bearing compass: Mill stack bears 152°M and Westfield church spire bears 255°M.
Variation is 7°W (from the rose); a hand-bearing compass held away from the boat's steel is taken to have no deviation. Convert to true, plot the two lines of position, and give the fix as the true bearing FROM Green can "1" to the fix, and the distance.
Tolerance: 2° and 0.15 nm (or 4 % of the distance).
Bearing from Green can "1": ________ °T Distance: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Bearing from Red nun "2": 348 °T Distance: 1.85 nm | No. 971001 (worked solution) |
| 2 | Bearing from Green can "1": 303 °T Distance: 3.21 nm | No. 971002 (worked solution) |
| 3 | Bearing from Red nun "2": 338 °T Distance: 1.37 nm | No. 971003 (worked solution) |
| 4 | Bearing from Kittle water tank: 306 °T Distance: 1.69 nm | No. 971004 (worked solution) |
| 5 | Bearing from Red nun "2": 340 °T Distance: 1.97 nm | No. 971005 (worked solution) |
| 6 | Bearing from Gannet Rock daybeacon: 013 °T Distance: 1.58 nm | No. 971006 (worked solution) |
| 7 | Bearing from Green can "3": 155 °T Distance: 1.71 nm | No. 971007 (worked solution) |
| 8 | Bearing from Green can "1": 320 °T Distance: 3.41 nm | No. 971008 (worked solution) |